Engine Specifications - Yamaha WR450FB 2012 Owner's Service Manual

EAS1DX3067
ENGINE SPECIFICATIONS
Engine
Engine type
Displacement
Cylinder arrangement
Bore x stroke
Compression ratio
Starting system
Fuel
Recommended fuel
Fuel tank capacity
Fuel reserve amount
(when the fuel level warning light comes on)
Engine oil
Lubrication system
Recommended brand
Type
Recommended oil grade
Engine oil quantity
Quantity (disassembled)
Without oil filter element replacement
With oil filter element replacement
Oil filter
Oil filter type
Bypass valve opening pressure
Oil pump
Oil pump type
Inner-rotor-to-outer-rotor-tip clearance
Limit
Outer-rotor-to-oil-pump-housing clearance
Limit
Oil-pump-housing-to-inner-and-outer-rotor
clearance
Limit
Cooling system
Radiator capacity (including all routes)
Radiator capacity
Radiator cap opening pressure
Radiator core
Width
Height
Depth
Water pump
Water pump type
2-2
ENGINE SPECIFICATIONS
Liquid cooled 4-stroke, DOHC
449 cm
3
Forward-inclined single cylinder
95.0 x 63.4 mm (3. 7 4 x 2.50 in)
12.30 :1
Electric starter and kickstarter
Premium unleaded gasoline only
7.5 L (1.98 US gal, 1.65 Imp.gal)
3.0 L (0.79 US gal, 0.66 Imp.gal)
Dry sump
YAMALUBE
SAE 1 OW-40, SAE 1 OW-50, SAE 15W-40,
SAE 20W-40 or SAE 20W-50
API service SG type or higher,
JASO standard MA
1.20
L
(1.27 US qt, 1.06 Imp qt)
0.95 L (1.00 US qt, 0.84 Imp qt)
1.00 L (1.06 US qt, 0.88 Imp qt)
Paper
40.0--80.0 kPa (0.40--0.80 kgf/cm 2 ,
5.8-11.6
psi)
Trochoid
Less than 0.120 mm (0.0047 in)
0.20 mm (0.0079 in)
0.090--0.170 mm (0.0035-0.0067 in)
0.24 mm (0.0094 in)
0.05-0.1 O mm (0.0020-0.0039 in)
0.17 mm (0.0067 in)
1.04 L (1.10 US qt, 0.92 Imp.qt)
0.63 L (0.67 US qt, 0.55 mp.qt)
107.9-137.3 kPa (1.08-1.37 kgf/cm2,
15.6-19.9 psi)
121.4 mm (4.78 in)
280.0 mm (11.02 in)
28.0 mm (1.10 in)
Single suction centrifugal pump